Saw-setting machine.



No. 839,909. PATENTED JAN. l. 1907. H. WATKINS 6L D. C. DYE.

SAW SETTING MACHINE.

APPLICATION FILED DEO. 5. 1905- 1H: NaRRls PETER: co., wAsHmnroN, D. c,

UNITED STATES PATENT OFFIOE.

y HARRY WATKINS AND DANIEL O. DYE, OF UTIOA, NEW YORK.

SAW-SETTING MACHINE.

Specification of Letters Patent.

Patented Jan. 1, 1907'.

To a/ZZ whom t may concern:

Beit known that we, HARRY WATKINS and DANIEL C. DYE, of Utica, in thecounty of Oneida, in the State of New York, have invented new and usefulImprovements in Saw-Setting Machines, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention relates tocertain improvements in saw-setting machines,and is articularly useful in setting the teeth of band and similarsaws-having a uniform transverse width.

The essential object of these improvements is to feed the sawcontinuously and rapidly in one -direction and to simultaneously anduniformly deflect or set the points of successive teeth to any desireddegree Without attention from the operator.

A more speciiic object is to enable the operator to adjust the sawrelatively to the tooth-setting wheel for the purpose of uniformlyvarying the set of the teeth.

Afurther object is to provide means whereby thefeeding and tooth-settingwheels may be quickly removed and replaced by others of different pitchto correspond with saws pavinhg diiferent numbers of teeth per unit ofengt Other objects and uses will be brought out ,in the followingdescription.

In the drawings, Figure 1 is a side eleva-` tion, partly in section, ofa saw-setting machine embodying the various features of our invention.Figs. 2, 3, and 4 are sectional views taken,res pectively, on lines 2 2,3 3, and 4,4,.Fig. 1. Fig. 5is a detail sectional view of the idler andits supporting-bearing seen in Fig. 1 for transmitting rotary motionfrom the feed-gear shaft to the shaft of the tooth-setting Wheel. Fig. 6is a top view of a portion of the saw-setting disk.

This saw-setting machine is portable and comprises a suitable supporting-frame 1, which is adapted to be secured by clamping bolts or screws 2to any available bench or equivalent support A and is provided with arearwardly-projecting iiange 3,resting upon the top of the support A toaid the bolts in holding the frame rigidly upon its support.

The base of the frame 1 is provided with forwardly-projecting ears 4 and5, which are spaced apart vertically and are provided with apertures 6for receiving a verticallyadjustable screw 7, upon which is mounted anut 8 between and engaging the adjacent faces of the ears 4 and 5,whereby the screws ment with the shoulders 9 by simply moving the wrenchupwardly, as best seen in Fig. 4, it being understood that the operatingend of the wrench normally surrounds the cylindrical portion of the nut8 and rests upon the lower ear 4, out of engagement with the teeth 9, sothat the nut may be rotated by hand to adjust the screw 7 a limiteddistance independently of the wrench 10, or when the power required isgreater than can be produced by the hand the wrench may be elevated intoengagement with theteeth 9and operatedv to further adjust the screw.

The upper end of the screw 7 is reduced in diameter and is fitted in oneend of a saw-supporting arm 12which is locked to the screw 7 by asuitable cap-screw 13 and extends-laterally therefrom directly under asaw-feeding wheel 14 and a tooth-setting wheel 15, said wheels beingmounted in substantially the same vertical plane, one in advance of theother, upon fixed shafts or studs l-and 17.

The saw-supporting arm 12 is held against rotary movement by a pin orstud 18, whichy is secured to the frame 1 and projectsthrough anaperture 19 in the saw-supporting frame 12, so that the arm may slide upand down upon the stud 18 as the screw 7 is adjusted vertically to varythe distance between the operating edges of the wheels 14 and 15 Vandupper surface of the arm 12 for dierent widths of saws.

The saw, as a band-saw B, is supported edgewise vertically between thearm .12 and wheels 14 and 15, with its teeth uppermost and its loweredge guided in vertically-adjustable parts 20 and 21, which are mountedone in advanc eof the other upon the arm 12, directly beneath the axesof the wheels 14 and 15, respectively, said saw-supporting members 20and 21 being provided with longitudinally-alined slots or grooves 22 and23, in which the lower edge of the saw is seatedl and guided and heldagainst lateral displacement during the operation of feeding the sawvand setting the teeth.

The saw-supporting member 21 is prefer- IOO IIO

ably dovetailed and seated in a dovetailed groove 24 in the arm 12 andis rigidly held in place by a set-screw 25. The other saw-supportingmember is formed upon the upper end of the adj usting-screw 26, which ispassed through apertures 27 at opposite sides of the slot 28 in the arm12, in which slot is mounted a suitable hand-nut 29, fitting upon thescrew 26 and engaging the upper and lower sides of the slot, so that byrotating the nut the screw 26 will be adjusted vertically.

The apertures 6 and 27, in which the screws 7 and 26 operate,respectively, are of smooth bore to permit their respective screws toslide freely therein, said screws being held against rotation by the sawB, which is seated in the slots 22 and 23.

The shaft or stud 16 is rigidly but removably secured to the frame 1, asbest seeninFig. 3, and upon it is journaled a sleeve 30, having a pinion3 1, and upon this sleeve the feedingwheel 14 is removably clampedbetween the pinion 31 and a suitable lock-nut 32, which latter fits upona threaded portion of the rotary sleeve 30. The outer end of this sleeve30 is preferably angular in cross-section for receiving ahand-piece 33,by which the sleeve 30 and feeding-wheel 14 may be rotated, said sleevebeing held against endwise movement between the frame 1 a'nd a suitablecap-screw 34, as best seen in Fig. 3. The cap-screw 34 is preferably ofless diameter than the inner diameter of the hub of the hand-piece,which fits upon the adjacent end of the sleeve 30 to permit vthe removalof said hand-piece when it is desired to remove the lock-nut 32 andfeeding-wheel 14 to substitute for the latter an additional wheelcorresponding to the teeth of the saw which is to be fed. The peripheryof the wheel 14 is provided with a series of teeth spaced a uniformdistance apart corre- Sponding to the tooth-spaces of the saw which isto be fed, so that the teeth of the feedingwheel will intermesh withthose of the saw, as best seen in Fig. 1, from which it will be seenthat by rotating the hand-piece 33 similar motion is transmitted to thefeedingwheel 14 for feeding the saw B continuously in the directionindicated by arrow fc.

The pinion3 1 upon the sleeve 30 preferably consists of a spur-gearmeshing with an idler 35, which in turn meshes with a similar spurgear36 on the spindle or stud 17. This gear 36 is provided with a hub uponwhich the tooth-setting wheel 15 is fitted and is removably locked tothe gear by means of a pin 37, the outer end of the hub of the gear 36being threaded for receiving a hand-nut 38, by which the tooth-settingwheel 15 is removably locked against endwise movement. The gear 36 isheld against endwise movement between the adjacent portion of the frame1 and a suitable cap-screw 39, as best seen in Fig. 3, said cap-screwbeing of less diameter than the inner diameter ofthe nut 38, so that thenut and tooth-setting wheel may be readily removed when desired tochange one tooth-setting wheel for another to correspond with the teethwhich are to be set. i

The construction of the tooth-setting wheel 15 forms an important partof my invention by reason of the fact that its periphery is formed withtwo circular series `of radial teeth orcams 40 and 40, the teeth of oneseries alternating with those of the other series and having theiradjacent faces beveled axially in intersecting planes, the outer ends ofthe beveled faces of each series of teeth being disposed in differentplanes spaced apart a distance slightly greater than the thickness ofthe saw, so that successive teeth of the saw will readily engage and beoperated upon by their.respective teeth 40 and 40 to deiiect the pointsof successive saw-teeth in opposite directions. This manner of formingthe beveled surfaces produces a V-shaped annular groove 41 centrally inthe periphery of the wheel 15 and of sufficient width at the peripheryto receive the teeth of the saw, and owing to the fact that thesetting-teeth of the wheel 15 are spaced to correspond withthe teeth ofthe saw it is obvious that two or more oppositely-beveled teeth of thewheel 15 will be simultaneously engaged with opposite faces of adjacentsaw-teeth, thereby affording additional support for the saw againstlateral displacement while the teeth are being formed, it beingunderstood that the wedging pressure of the saw-setting teeth is equalon the opposite sides of the saw.

In the first setting of the saw-teeth the sawis placed edgewisevertically in the longitudinally-alined grooves 22 and 23, andcorresponding toothed wheels 14 and 15 are then placed upon theirrespective rotary gearhubs 30 and 36 and clamped in proper position,care being taken to register the teeth of the wheels 14 and 15 with thesaw-teeth, after which the saw-supporting arm 12 is adj usted verticallyto force the teeth of the saw against the beveled faces of the teeth 40and 41 of the wheel 15 sufficiently to give thev desired set to theteeth of the saw. It is now evident that if the saw-supporting member 20is adjusted by the screw 26 and nut 29 to force the teeth of the sawinto mesh with the teeth of the feeding-wheel 14 the rotation of thefeeding-wheel in the direction indicated by arrow y by means of thehandcrank 33 will feed the saw B in the direction indicated by arrow X,thereby causing the moving saw to rotate the teeth-setting Wheel 15 tobring the beveled faces of successive teeth 40 and 40 into wedgingengagement with the successive saw-teeth, thereby establishing acontinuous action of the saw-setting wheel upon theprogressively-advancing sawteeth. It is also evident that when theteeth- ICO IIO

setting wheel is once set with its teeth in registration with the teethof the saw the latter may be fed as rapidly as desired with theassurance that each tooth of the saw will receive the same degree ofdeflection and that each successive tooth will be deflected in anopposite direction, thereby not only economizing in the time and laborof setting the saw, but also producing an absolutely uniform degree ofset in all of the teeth.

If it is desired to reset the teeth of a saw which have once been set,it is simply necessary to adjust the Wheel 15 to bring one of itsbeveled faces into registration with one of the teethof the saw which isdeflected in the same direction, whereupon the teethsetting wheel isclamped in place and the feeding-wheel brought into registration withthe teeth of the saw and rotated in the manner described, positivemotion being imparted from the feeding-wheel 14 to the tooth-settingwheel 15, through the medium of the gears 31, 35, and 36, thefeeding-wheel and tooth-setting wheel being therefore synchronized andproportioned as to their pitch or number of teeth per unit ofcircumference, so that the saw-setting teeth of the wheel 15 will alwaysbe brought into registration with the saw-teeth which are to be set.

The operation of our invention is believed to be clearly set forth inthe foregoing description in such exact terms as to enable any one.skilled in the art to construct and successfully operate the machine.

1. In a saw-setting machine, a supportingframe, a rotary disk havingsaw-setting teeth radiating inwardly from its periphery, a sawfeedingwheel at one side of the tooth-setting wheel, means to rotate thefeeding-wheel, means for transmitting motion from the feeding-wheel tothe saw-setting wheel, a vertically-adjustable saw-support directlyunder the saw-setting wheel, and an additional verticallyadjustablesaw-support directly under the feeding-wheel.

2. In a saw-setting machine, a supportingframe, a saw-setting wheel anda saw-feeding wheel both mounted upon the supportingframe and connectedfor synchronous rotation, a vertically-adjustable screw mounted on theframe, an arm mounted upon the upper end of the screw and extendingunder the lower faces of the saw-setting wheel and the saw-feedingwheel, a grooved saw-guide rigid on the arm directly under thesaw-setting wheel, an additional grooved saw-guide mounted on the armdirectly under the feeding-wheel, means for adjusting said armvertically and separate means for adjusting the additional groovedsaw-guide vertically.

In witness whereof we have hereunto set our hands this 28th day ofNovember, 1905.

HARRY WATKINS. DANIEL C. DYE. Witnesses:

F. H. HAZARD, C. G. GREENE.

